/*****************************************************************************
 * Open MCT, Copyright (c) 2014-2018, United States Government
 * as represented by the Administrator of the National Aeronautics and Space
 * Administration. All rights reserved.
 *
 * Open MCT is licensed under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * Open MCT includes source code licensed under additional open source
 * licenses. See the Open Source Licenses file (LICENSES.md) included with
 * this source code distribution or the Licensing information page available
 * at runtime from the About dialog for additional information.
 *****************************************************************************/

define(
    [],
    function () {

        /**
         * Disallow composition changes to objects which are not mutable.
         * @memberof platform/containment
         * @constructor
         * @implements {Policy.<Type, Type>}
         */
        function CompositionMutabilityPolicy() {
        }

        CompositionMutabilityPolicy.prototype.allow = function (candidate) {
            // Equate creatability with mutability; that is, users
            // can only modify objects of types they can create, and
            // vice versa.
            return candidate.getCapability('type').hasFeature('creation');
        };

        return CompositionMutabilityPolicy;
    }
);
